Sulfonic lubricating material and process of making the same



Patented 10, 1931 UNITED STATES PATENT- OFFICE HERBERT I. JOHNSON, OF BROOKLYN, NEW YORK: ASSIGNOR TO STANDARD OIL DEVELOPMENT COMPANY, A CORPORATION OF DELAWARE '7 SUI-FONIC LUBRICATIITG NIATERIAL AND PROCESS OF MAKING THE SAME No Drawing.

This invention relates to improvements in lubricants of the type comprising sulfonic compounds derived from mineral oils and the like. In a referred embodiment of the invention the lubricant contains a mineral oil sulfonic compound, an animal or vegetable oil or fat, and water. While the lubricant has many uses, it is especially advantageous in the drawing and polishing of steel, copper, brass, and nickel tubing or wire and in general to any operations in which metal is cold drawn to shape with the aid of a lubricant. As the sulfonic compound, I may use the green sulfonic acid which is the principal organic acid occurring in the sludge formed in the treatment of petroleum lubricating oil with strong sulfuric acid. The sulfonic acid maybe urified in any suitable way, if desired. rdinarily I refer to use sulfonic acid salts, which may be readily repared by neutralizing the acid by a suita le base, for example sodium hydroxide. The sulfonic compound is incorporated with an oleaginous material having lubricating properties, such 2 as animal or vegetable oils, fats, or fatty acids, especially tallow, palm oil, cocoanut oil, cottonseedoil, and oleic acid. Various other materials of this type, as well as mixtures of the same, may be used.

The following example is illustrative of the invention: For the preparation of a lubricant especially adapted for use in die-drawing meta-ls, 15 to arts of a water soluble sodium sulfonate, erived from petroleum '35 hydrocarbons, are mixed with 1 to 15 arts Application filed September 8, 1924. Serial No. 736,634.

in water, which may be heated by steam coils or other suitable means. @lhe tallow is then added and liquefies in the hot solution. The steam pipes may' advantageously b'e sufficiently hot to produce some boiling in the solution. In this way proper admixture of the tallow is secured. The pipes or the like to be drawn are immersed in the hot mixture and are preferably allowedto dry after removal before being drawn. The lubricant described is an excellent dr awing compound, as it gives a tough coating which is not easily displaced and has adequate lubricating properties to prevent abrasion or stickingof the rubbing surfaces.

Heating themixture to an average temerature of 180 F. with steam coils has been ound to be satisfactory, but other temperatures and means of heat-ing may'of course be employed, depending upon the particu-' lar character of the ingredients used and the results sought. Various modifications of the compositions and procedures described may also be made within the scope of the appended claims.

I claim:

1. Process of making a lubricant, comprising heatin together a salt of a substantially water-solu le green sulfonic acid obtained from the sludge formed by treating petroleum lubricating oil with strong sulphuric acid, water, and a fatty ole'aginous material, under conditions to effect the distribution of the latter in'the water. J

2. Process according to claim 1 in which of tallow and to the mixture so pro need .the mixture is heated to. about 180 F.

there is added suflicient water to make a total of 100 parts. For many purposes 20 parts sodium sulfonate, 5 parts tallow and 75 parts 40 of water ap ear tobe most satisfactory.

' However, I 0 not wish to be limited to any of the proportions stated, as these will vary with the urpose for 'WlllCh the lubricant is to be used Water may be incorporated also in any desired amount. A suitable composition for die-drawing purposes is sodium sulfonate 20%, tallow 5%, water 75%.

This mixture may beprepared for use by heating, with or without agitation. The

sodium sulfonate is preferably first dissolved 3. Process according to claim 1 in-which the mixture is heated simultaneously producing some boiling, whereby distribution of the ingredients is effected.

4. A lubricant comprising a metallic salt of a sulfonic compound obtained from the sludge formed by treating petroleum lubrieating oil with strong sulphuric acid and a non-mineral, substantially unsaponified' oleaginous material.

5. A lubricant comprisin a metallic salt of the green sulfonic acid 0 taind from the sludge formed by treating petroleum lubricating oil with strong sulphuric acid a normally solid, non-mineral, substantially unsaponified oleaginous material.

6. A lubricant comprising a sodium salt of the green sulfonic acid obtained from the sludge formed by treating petroleum lubrieating oil with strong sulphuric acid and unsap'onified tallow.

7. A lubricant comprising a sodium salt of the green sulfonic acid obtained from the sludge formed by treating petroleum lubricating oil with strong sulphuric acid -30 parts,'and tallow 1-15 parts.

8. A lubricant comprising a, sodium salt of the green sulfonic aci obtained from the 15 sludge formed by treating petroleum lubricating oil with strong sulphuric acid parts, and tallow 5 parts. 9. A lubricant comprising a salt of the green sulfonic acid obtained from the sludge 20 formed by treating petroleum lubricating oil with strong sulphuric acid, a normally solid, substantially unsaponified lubricant material, and water.

10. A lubricant comprising a salt of the 5 green sulfonic acid obtained from the sludge formed by treating petroleum lubricating oil with strong sulphuric acid, unsaponified tallow, and water.

11. A lubricant comprising a salt of the green sulfonic acid obtained from the sludge formed by treating petroleum lubricating oil wlth strong sulphuric acid 15-30%, tallow 1-15%, and water to make up to 100%.

12. A lubricant comprising a sodium salt of the green sulfonic acid obtained from the sludge formed bytreating petroleum lubrieating oil with' strong sulphuric acid 20%, t'allow 5%, and water 75%.

HERBERT L. JOHNSON. 

